Chernihiv was first mentioned in the Rus'-Byzantine Treaty (907) (as Черниговъ (Chernigov)), but the time of establishment is not known. According to the items uncovered by archaeological excavations of a settlement which included artifacts from the KhazarKhaganate, it seems to have existed at least in the 9th century. Towards the end of the 10th century, the city probably had its own rulers. It was there that the Black Grave, one of the largest and earliest royal mounds in Eastern Europe, was excavated in the 19th century.

According to the census of 1897 there were in the town of Chernihiv about 11,000 Jews in a total population of 27,006. The chief occupations of the Jews were industrial and commercial. In the neighborhood many tobacco-plantations and fruit-gardens were owned by Jews. There were in Chernihiv 1,321 Jewish artisans, including 404 tailors and seamstresses, but the demand for artisan labor was limited to the town. There were 69 Jewish (day-laborers, almost exclusively teamsters. But few were engaged in the factories.[3]

Eletsky monastery cathedral was modeled after that of Kiev Pechersk Lavra. Note the contrast between its austere 12th-century walls and baroque 17th-century domes.

Archbishop's residence in Chernihiv

Chernihiv Museum of Arts

Regimental Chancellery building

Chernihiv Seminary

Chernihiv's architectural monuments chronicle two most flourishing periods in the city's history - those of Kievan Rus' (11th and 12th centuries) and of the Cossack Hetmanate (late 17th and early 18th centuries.)

The oldest church in the city and one of the oldest churches in Ukraine is the 5-domed Saviour Cathedral, commissioned in the early 1030s by Mstislav the Bold and completed several decades later by his brother, Yaroslav the Wise. The Cathedral of Sts Boris and Gleb, dating from the mid-12th century, was much rebuilt in succeeding periods, before being restored to its original shape in the 20th century. Likewise built in brick, it has a single dome and six pillars. The crowning achievement of Chernihiv masters was the exquisite Pyatnytska Church, constructed at the turn of the 12th and 13th centuries. This graceful building was seriously damaged in the Second World War; its original medieval outlook was reconstructed to a design by Peter Baranovsky.

The earliest residential buildings in the downtown date from the late 17th century, a period when a Cossack regiment was deployed there. Two most representative residences are those of Polkovnyk Lyzohub (1690s) and Polkovnyk Polubutok (18th century). The former mansion, popularly known as the Mazepa House, used to contain the regiment's chancellery. One of the most profusely decorated Cossack structures is undoubtedly the ecclesiastical collegium, surmounted by a bell-tower (1702). The archbishop's residence was constructed nearby in the 1780s. St Catherine Church (1715), with its 5 gilded pear domes, traditional for Ukrainian architecture, is thought to have been intended as a memorial to the regiment's exploits during the storm of Azov in 1696.

All through the most trying periods of its history, Chernihiv retained its ecclesiastical importance as the seat of bishopric or archbishopric. At the outskirts of the modern city lie two ancient cave monasteries, formerly used as the bishops' residences.

The caves of the Eletsky Monastery are said to predate those of the Kiev Pechersk Lavra (Kiev Monastery of the Caves). Its magnificent 6-pillared cathedral was erected at the turn of the 11th and 12th centuries; some traces of its 750-year-old murals may still be seen in the interior. After the domes collapsed in 1611, they were augmented and reconstructed in the Ukrainian baroque style. The wall, monastic cells, and bell-tower all date from the 17th century. The nearby mother superior's house is thought to be the oldest residential building in the Left-Bank Ukraine. The cloister's holiest icon used to be that of Theotokos, who made her epiphany to Svyatoslav of Chernigov on 6 February 1060. The icon, called Eletskaya after the fir wood it was painted upon, was taken to Moscow by Svyatoslav's descendants - Princes Baryatinsky - in 1579.

The nearby cave monastery of St Elijah and the Holy Trinity features a small eponymous church, which was constructed 800 years ago. The roomy Trinity cathedral, one of the most imposing monuments of the Cossack baroque, was erected between 1679 and 1689. Its refectory, with the adjoining church of Presentation to the Temple, was finished by 1679. There are also the 17th-century towered walls, monastic cells, and the five-tiered belfry from the 1780s.

Chernihiv has a humid continental climate (KöppenDfb) with cold, cloudy and snowy winters, and warm, sunny summers. The average annual temperature for Chernihiv is 7.0 °C (44.6 °F), ranging from a low of −5.6 °C (21.9 °F) in January to a high of 19.5 °C (67.1 °F) in July. Precipitation is well distributed throughout the year though precipitation is higher during the summer months and lower during the winter months. The record high was 39.0 °C (102.2 °F) and the record low was −36.0 °C (−32.8 °F).